Question: Two trains with 124-Hz horns approach one another. The slower of the two trains has a speed of 26 m/s. What is the speed of

Two trains with 124-Hz horns approach one another. The slower of the two trains has a speed of 26 m/s. What is the speed of the fast train if an observer standing near the tracks between the trains hears a beat frequency of 4.4 Hz?

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